Re: [PATCH] drm/rockchip: vop: fixup linebuffer mode calc error

[Sandy Huang]

在 2018/4/17 19:14, Heiko Stuebner 写道:
> Hi Sandy,
>
> Am Dienstag, 17. April 2018, 12:15:07 CEST schrieb Sandy Huang:
> > When video width is bigger than 3840 the linebuffer mode
> > should be LB_YUV_3840X5.
>
> Can you explain that a bit better?
>
> I.e. when looking at the code, the very first check is width > 2560.
>
> So it seems your change targets some YUV mode with width > 3840
> which should be mentioned in the commit message, so people like
> me don't scratch their head in confusion ;-)
>
> Similarly that check is actually width > 1280 to set LB_YUV_3840X5,
> so I guess you're actually wanting any YUV mode bigger than
> 1280px should use LB_YUV_3840X5?
>
>
> Heiko

Thanks heiko,
I will make more description for this path at next version.

> > Signed-off-by: Sandy Huang <hjc@xxxxxxxxxxxxxx>
> > ---
> >   drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> > index 56bbd2e..3e7501b 100644
> > --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> > @@ -332,7 +332,7 @@ static inline int scl_vop_cal_lb_mode(int width, bool is_yuv)
> >   
> >   	if (width > 2560)
> >   		lb_mode = LB_RGB_3840X2;
> > -	else if (width > 1920)
> > +	else if (!is_yuv && width > 1920)
> >   		lb_mode = LB_RGB_2560X4;
> >   	else if (!is_yuv)
> >   		lb_mode = LB_RGB_1920X5;